(19)
(11) EP 1 148 941 A1

(12)

(43) Date of publication:
31.10.2001 Bulletin 2001/44

(21) Application number: 00906927.9

(22) Date of filing: 14.01.2000
(51) International Patent Classification (IPC)7B01J 8/24, C01B 3/44
(86) International application number:
PCT/US0000/984
(87) International publication number:
WO 0043/118 (27.07.2000 Gazette 2000/30)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 22.01.1999 US 236152

(71) Applicant: ExxonMobil Research and Engineering Company
Annandale,New Jersey 08801 (US)

(72) Inventors:
  • WEINSTEIN, Herbert
    Teaneck, NJ 07666 (US)
  • SHABAKER, Robert, H.
    Chatham, NJ 07928 (US)
  • TILLER, Mark, L.
    Baton Rouge, LA 70808 (US)
  • TAYLOR, James, Howard, Jr.
    Baton Rouge, LA 70806 (US)
  • PITZER, Darrell, R.
    Denham Springs, LA 70706 (US)

(74) Representative: Dew, Melvyn John et al
ExxonMobil Chemical Europe Inc.Intellectual Property Shared ServicesP.O. Box 105
1830 Machelen
1830 Machelen (BE)

   


(54) PROCESS FOR DETECTING, AND MONITORING CHANGES IN PROPERTIES OF FLUIDIZED BED SOLIDS BY MEASUREMENT OF PRESSURE DIFFERENCE FLUCTUATION